Jump to content

Menú teléfono cabecera
Language selector
menuPrincipal
menuPrincipal
Language selector

Oftalmología.jpg
Consultation area
doctora agrafojo CVdoctora agrafojo CV
INOF - Dra. Dora Fernández AgrafojoOphthalmology
Description Services Team Contact Relevant details Opening hours
Cirugía refractiva

Miopía

miopiaEs una condición ocular normalmente hereditaria, que provoca que los objetos se vean claros de cerca y borrosos de lejos. Su causa más frecuente es que el ojo es más largo de lo normal o la córnea está demasiado curvada, con lo cual los rayos de luz convergen antes de llegar a la retina, dando lugar a una imagen borrosa.

En la miopía, los rayos de luz convergen por delante de la retina, no sobre ella.

Hipermetropía

hipermetropiaEn este defecto los rayos de luz convergen detrás de la retina debido a que el ojo es más corto de lo habitual o la córnea demasiado plana, al contrario que en la miopía, dando lugar a una imagen borrosa principalmente de cerca.

En la hipermetropía, los rayos convergen por detrás de la retina.

Astigmatismo

AstigmatismoCuando alguien tiene astigmatismo significa que la córnea está más curvada en un eje que en otro.

Para entenderlo diríamos que la córnea tiene más la forma de una pelota de rugby que de una de fútbol.

Produce visión borrosa a cualquier distancia, causando una distorsión de la imagen parecida a la de los espejos donde te ves más alto, más ancho o más delgado. Puede presentarse solo o asociado a miopía o hipermetropía.

En el astigmatismo, las irregularidades en la curvatura hacen que las imágenes se perciban deformadas.

  • What is refractive surgery?

    Refractive surgery is surgery which has been developed to treat refractory defects like myopia, hyperopia and astigmatism and improve sight without the aid of glasses or contact lenses.

  • What is Lasik vision correction?

    LASIK vision correction is the most renowned form of refractive surgery, performed by lifting a flat of corneal tissue 1/3 the thickness of the cornea with a microkeratome. A laser is then applied to the stroma thus re-shaping the cornea.

    lasik_1 lasik_2
    The opening of the cornea, lifting the outer flap of tissue with a microscopic blade.

    lasik_3 lasik_4
    Employment of the laser to re-shape the cornea alongside the final result.


  • What does Zyoptix involve?

    The Zyoptix approach is a personalised form of excimer laser treatment in which the laser software adjusts itself to match the information provided by two pieces of apparatus: the first is the aberrometer, designed to identify aberrations in the optical system, phenomena which tarnish the quality of vision for some people; and the second is an elevation topographer, which collects information regarding the front and rear faces of the cornea, indicating any features which may render laser treatment for a refractory problem inappropriate.

  • What is the main advantage of Zyoptix?

    Personalised treatment allows us to provide the most suitable medical assistance for each patient, lowering risks and enhancing quality.

  • Is Zyoptix a substitute for Lasik technique?

    No, Zyoptix is a complementary treatment for those patients, who on the grounds of an overly thin cornea or extreme short-sightedness, were not eligible for the Lasik option. Thanks to the Zyoptix method, the excimer laser can be employed on a broader spectrum of people. But it will, in any case, always be the ophthalmologist who decides whether Zyoptix treatment is appropriate or not.

  • What is the technique Tissue Saving?
    • Tissue Saving is a customized technique that applies laser to the stroma, just like the Excimer Laser and Zyoptix, to re-shape the tissue and reduce the number of diopters.
    • With Tissue Saving it is possible to operate on less thickness of the cornea in order to get the same correction of diopters than with Lasik, and the problem is solved quicker.
  • What is the main advantage of Tissue Saving?

    Given that this kind of laser acts quicker and it's applied in less tissue, we are able to respect more the corneal integrity. Therefore, surgery is allowed to a wider range of patients.

  • Is Tissue Saving a substitute for the Lasik technique?

    No, Tissue Saving is complementary treatment for those patients, who on the grounds of an overly thin cornea or extreme short-sightedness were not eligible for the Lasik option. Thanks to this method, the excimer laser can be employed on a broader spectrum of people. But it will, in any case, always be the ophthalmologist who decides whether Tissue Saving treatment is appropriate or not.

  • How many diopters can be treated with the laser?
    • Myopia: Up to 10 diopters (Up to 15 with Zyoptix).
    • Hyperopia: Up to 5 diopters.
    • Astigmatism: Up to 6 diopters.
  • Is the operation painful?

    No, treatment is not painful. It is conducted with the patient placed under a topical anaesthetic (via administration of anaesthetic eye drops). The only thing felt is a burning sensation in the hours following the operation.

19 results
Pages: 1 2 next >

Pedir cita